Add change file for Qt 5.6.3

Change-Id: I76c7bb46ae7e068c1db780c34d8a0c065e55b2c4
Reviewed-by: Alex Blasche <alexander.blasche@qt.io>

dist/changes-5.6.3

+Qt 5.6.3 is a bug-fix release. It maintains both forward and backward
+compatibility (source and binary) with Qt 5.6.0.
+
+For more details, refer to the online documentation included in this
+distribution. The documentation is also available online:
+
+  http://doc.qt.io/qt-5/index.html
+
+The Qt version 5.6 series is binary compatible with the 5.5.x series.
+Applications compiled for 5.5 will continue to run with 5.6.
+
+Some of the changes listed in this file include issue tracking numbers
+corresponding to tasks in the Qt Bug Tracker:
+
+  https://bugreports.qt.io/
+
+Each of these identifiers can be entered in the bug tracker to obtain more
+information about a particular change.
+
+****************************************************************************
+*                           Library                                        *
+****************************************************************************
+
+QtLocation
+----------
+
+  - [QTBUG-56099] Updated HERE plugin base address
+  - [QTBUG-56119] Added OSRMv5 support to the osm plugin
+  - [QTBUG-57027] Fixed fitViewportToGeoShape on rectangles crossing the date
+    line.
+  - Updated HERE plugin geocoding endpoints
+
+
+QtPositioning
+-------------
+
+  - [QTBUG-54844] Fixed error status for QGeoPositionInfoSourceAndroid
+  - [QTBUG-56623] WinRT backend now uses backend-provided timestamps